<wicket:panel xmlns:wicket="http://wicket.apache.org">
    <form wicket:id="form" class="pure-form pure-form-aligned">
        <fieldset>

            <div class="pure-control-group">
                <label>
                    <wicket:message key="person.firstName"/>
                </label>
                <input type="text" wicket:id="firstName"/>
            </div>

            <div class="pure-control-group">
                <label>
                    <wicket:message key="person.lastName"/>
                </label>
                <input type="text" wicket:id="lastName"/>
            </div>
        </fieldset>
    </form>
</wicket:panel>